billie holiday singing "strange fruit" in 1939? ♪ >> she bemoans the lynching of two men. >> the protest song is a distinctively american form of outrage. for example, "blowing in the weekend" by bobrcome" by pete seeger. ♪ ♪ >> my personal favorite, "what's going on" by marvin gaye. ♪ but of course, "fight the power ." by public enemy. ♪ >> through music, americans express their passion and channel their energy. which explains why america is the birthplace of rock-and-roll , and jazz, and the blues. all of which are preserved at the packard campus. >> and now, time for our exit music. >> one of the oldest recordings in the collection, from 1897. "stars and stripes forever." ♪ [applause] >> thank you very much. >> now we are going to take it back in time to the late 1940's. an american housewife comes home and finds a large, wooden box dominating her living room. [laughter] what in the world is that? >> what is this? honey, this is only the first television set. that is all. >> a television set? what does it do? >> honey, television brings forth joy and wonder, enlightenment, and fulfillment. why, television is going to change the world. you look skeptical. >> i am. >> sweetheart,